SMS Error Codes – CallHub Customer Support

Got an SMS error code on CallHub? We break down all common errors our carriers throw along with their reasons. This is your cheat sheet.

The CallHub system sends messages through the telecom carrier. We receive an acknowledgment from the carrier for every message sent from the system. However, if there is an error code attached to any of your outbound text messages, it simply means the message failed.
The below table describes each text message error code and the reason why the messages failed. You can also view them from the “Error Codes” column in the SMS Report.

TEXT MESSAGE ERROR CODE	REASON	DESCRIPTION
30003	Unreachable Destination Handset	The recipient's number is unreachable. The number could be out of service or may not accept messages.
30004	Message blocked	If a message you sent is not delivered to the end device, it means the message failed as the destination number is blocked from receiving this message.
30005	Unknown Destination Handset	The destination number is unknown or no longer in service.
30006	Landline or unreachable carrier	The destination number is unable to receive this message. Potential reasons could include trying to reach a landline or, in the case of shortcodes, an unreachable carrier.
30007	Carrier Violation	The number is blocked, and the messages are filtered and/or marked as “Spam” for violating carrier regulations.
50	Invalid destination number	The destination number you entered is either not entered correctly or not SMS-enabled.
300	Failed to dispatch Message	An error occurred while sending the message to carriers. This is an internal failure, and messages with this error code will be retried at a later time.
1000	Unknown error	Delivering your message failed for reasons that are unknown to us and to our carriers.
450	Destination Country Disabled	Messages to this destination country have been disabled for your account. To enable them, please create a ticket with Support.
70	Destination permanently unavailable	The destination phone number is not active and there is no indication of when it will become available again
90	No route available	The carrier and fallback carriers were not able to deliver the SMS message because the route was not available.
200	Source number blocked by STOP from destination number	The destination has opted out of your campaign and blocked all messages sent from your phone number. Opt-outs are typically received via text message replies with an opt-out keyword, including “STOP”
20	Network Error	The carrier delivering the text message had network issues. This is a temporary error. You can retry at a later time when the carrier network is unaffected.
30/40002	Spam Detected	This error occurs when the messages you are trying to send are filtered by the carrier when the carrier detects Spam.
40004	Rejected by destination	The recipient server is rejecting the message for an unknown reason.
30008/40008	Undeliverable	The destination may not have messaging service, or their account may not be in good standing or The destination network may be experiencing a temporary problem
40012	Invalid destination number	The destination phone number was deemed invalid by the carrier and was rejected
80	Destination temporarily unavailable	The number is temporarily unavailable; the phone is currently unreachable due to being turned off or not connected to a carrier network.

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